To be clear, you cannot die while playing as Godzilla--you'll always turn back into a normal player at the end of it, no matter what. From there, you'll play the rest of the match out as usual. You don't, by the way, get any rewards for having been Godzilla in a match, aside from the happy memories.

Epic Games has been teasing Godzilla's arrival in Fortnite for over two months now, and you can finally check out the kaiju in its latest update. While there is a Mechagodzilla skin you can buy from the in-game store,

Transforming into Godzilla gives you access to powerful abilities that can level cities and annihilate other players — as long as you’re the first to enter a special portal. Becoming Godzilla is easier said than done as you must find the portal that spawns randomly,